CJCoding With Joseph
15free / daySign inCreate account

Every Instructor's Course Load

For every instructor, count the courses they teach. Return first_name, last_name and courses (the count). Yuki Tanaka teaches nothing yet and must still appear with 0. Sort by courses from most to fewest, then by last_name.

Expected result:

+------------+-----------+---------+
| first_name | last_name | courses |
+------------+-----------+---------+
| Grace      | Okafor    |       2 |
| Daniel     | Reyes     |       2 |
| Helen      | Brooks    |       1 |
| Mei        | Chen      |       1 |
| Amara      | Diallo    |       1 |
| Olivia     | Grant     |       1 |
| Marcus     | Lindqvist |       1 |
| Rafael     | Moreno    |       1 |
| Priya      | Natarajan |       1 |
| Tomasz     | Nowak     |       1 |
+------------+-----------+---------+
(showing 10 of 12 rows)
Hints3 available
Topics:
Joins
1
Tab to indent (Esc then Tab to move on) · Ctrl+Enter to run · Ctrl+Space to expand shortcuts (sel, ins, desc)

Results

Run your SQL to see every statement's output here, then how it compares with the expected answer.

Not sure what is in a table? SHOW TABLES lists them and DESCRIBE students shows the columns — or open the database browser on the left.